|
Engine Swap: 225 /6 to small block V8
This is from my experience doing a 64 D100 225 /6 W/3spd Transmission
First there is a couple of things you'll need to make the swap
1. Make sure the crank is drilled properly for the pilot bushing
The dimension is .9375 (15/16)
Pilot Bushing dimensions are: OD= .9375 (15/16), ID=.750 (3/4),
length .875 (7/8)
Note: Buy a complete engine, not a long block, this is from experience.
2. V8 Flywheel and clutch, this should be 11 inch Beck and Borg, 10 spline
The 318 Poly and 318 LA engine use the same flywheel.
The 226 /6 flywheel is a dual patteren for a 10 1/2 or 11 inch clutch.
3. V8 Brakets, these bolt to the engine
4. Front sump pan and pick up tube
I have seen the stock APn used, there is about 2 1/5 inches between the pan and axle
5. V8 radiator or modify the 6 cyl radiator.
6. The motor mounts need to be moved down to the alternate holes in the frame.
7. The bellhousing from the /6 will bolt to the small block
This is my experiance:
Remember this is my first experiance with these old trucks and with Mopar for that matter.
I bought the 64 with a bad 225 /6, I decided if I was going to switch engines I would rather
have a V8. A 318 sounded good. I saw an add for one and after talking to the guy told him
I'd take if he he could deliver it. He told me they used it as a smog engine.
They would put it in their hot rod to smog it and then pull it after it was smogged
I soon learned it was a 273, not a 318. First lesson, don't believe the seller.
I learned that the block casting has the cubic inches.
I spent way to much time money finding and buying the parts I needed to complete the
engine. Exhaust, pully's, distributor, water neck, coil, thermastate and water neck, alternator
bracket, dip stick and a few other parts. I thought I was ready, I bought a pilot bushing, it
wouldn't fit. It turns out the crank was not drilled the correct diameter for the pilot bushing.
My nieghbor, a machinist offered to turn down the bushing. I was offered a 76, 318 camper van
with a 3 spd trans for free from a friend of mine. t had 58,000 original miles. I decided that would be the best way to go.
I scraped the idea of the 273. The van would give me everything I needed, I already had the flywheel and clutch.
The vac has a 3 spd, so it is drilled for a pilot bushing. I'll add more when I'm done and add some pics too.
|
|
|
|
HEI Distributor swap, V8 or L6
Special thanks Jeff Clare, he supplied most of this information
You can update your existing distributor with a Pertronix. unit. This will retain the stock look or you can get the Mopar electronic ignition from a salvage yard or a new one from Mopar Performance.
Kit's from Mopar dealers can cost more than $250. The Mopar kit's are also available from Jeg's and Summit for around $180 for the small block and less for the big & Hemi blocks. The kit's have all that is needed for the up grade and come with instructions and the ECU box.. All the parts for the upgrade are also individually available from J & S.
Note: All new kit's are the 4 post ECU
ECU box's are rated as follows:
Orange: 6,000 rpm
Chrome: 8,000 rpm
Gold: 12,000 rpm.
There are two types:
1. 5 post ECU box with a 4 post ballast resister. (see drawing below)
Wiring for 5 post ECU box with a 4 post ballast resister:
In the 4 post ballast sys. you have to use all 5 wires from the ECU box.
2 wires go to the dist. 2 wires go to the ballast and 1wire goes to the neg side of the coil.
Starting at the top of the ECU box plug-in (side with the point that is closest to the mounting hole )that wire goes to side of ballast that has power when key is on(or run). going around to the right, next two should go to the dist. next to the right should go to the "start" side of the ballast. last wire goes to the neg. side of coil.
2. 4 post ECU box with a 2 post ballast resister.
Wiring for 4 post ECU box with a 2 post ballast resister:
On the drawings I have marked the wires, on both, with letter's.
'A' is the green wire.
'B' is the black wire
'C' is the light blue wire
Green wire is not used in the 4 post ECU application.
Lt blue wire runs to the hot side of the ballast with the key 'on'
Black wire runs to the negative side of the coil.
Green wire used on the 4 post ballast only and runs to the post opposite the coil plug!
It is important that the wires that run from the distributor, if cut, be hooked up
in their proper position.
It is a good idea that the ECU box is grounded by a wire from one of it's mounting
holes to ether the engine block or the negative side of the battery, as a poor
ground for the ECU can cause running (high speed miss) and/or starting problems.
6 Cyl Info
Clifford Enginreering is a good source for 6 cylinder parts.
Clifford Engineering
Automatic Trans Swap
I havn't done this swap. When I gather the information required, I will add it
|
